C4H6N2S
114.17 g/mol
APIWarning
Methimazole
CAS60-56-0EC200-482-4
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material
Methimazole is an active pharmaceutical ingredient primarily used in antithyroid drug manufacturing. It may cause developmental toxicity as per government labeling requirements.
Pharmaceutical raw material for antithyroid drug productionUse in cyanide-free silver electroplating
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 60-56-0
Related Compounds
ApplicationSame Use
Methylthiouracil
CAS56-04-2
pharmaceutical raw material
ReferenceSame Category
Ergometrine
CAS60-79-7
pharmaceutical raw material
ReferenceSame Category
Antipyrine
CAS60-80-0
pharmaceutical raw material
ReferenceSame Category
Quinine dihydrochloride
CAS60-93-5
pharmaceutical raw material
ReferenceSame Category
Hydrocortisone sodium phosphate
CAS6000-74-4
pharmaceutical raw material
Referencesame scaffold
Imidazole-2-thiol, 5-ethoxycarbonyl-
CAS64038-64-8
pharmaceutical intermediate
Referencesame scaffold
Carbimazole
CAS22232-54-8
pharmaceutical raw material
Referencesame scaffold
Ergothioneine
CAS497-30-3
Antioxidant dietary supplement and cosmetic ingredient
Safety Reference
Warning
H302Harmful if swallowed
H317May cause an allergic skin reaction
H361Suspected of damaging fertility or the unborn child
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for Methimazole (CAS 60-56-0) is 2933.29.
HS code (international, 6-digit)
2933.29
EU CN code (8-digit)
2933 29 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
3-methyl-1H-imidazole-2-thione
InChIKey
PMRYVIKBURPHAH-UHFFFAOYSA-N
SMILES
CN1C=CNC1=S
Synonyms (99)
- MMZ
- Carbimazole EP Impurity A
- Methimazole (USP)
- Methimazole, United States Pharmacopeia (USP)
- Thiamazol [INN-French]
- Thiamazole (JP18/INN)
- Thiamazole, European Pharmacopoeia (EP)
- Thiamazolum [INN-Latin]
- Tiamazol [INN-Spanish]
- 1-Methyl-1H-imidazole-2-thiol
- 1-Methyl-2-imidazolethiol
- 1-Methyl-2-mercaptoimidazole
- 1-Methylimidazole-2-thiol
- 1-Metylo 2 merkaptoimidazolem
- 1-methylimidazole-2-thione
- 2-Mercapto-1-methylimidazol
- 2-Mercaptomethylimidazole
- 2-mecapto 1-methylimidazole
- 2-mercapto-1-methyl-imidazole
- 2-mercapto-3-methylimidazole
- 2-mercapto-N-methylimidazole
- Basolan
- Danantizol
- Favistan
- Felanorm
- Felimazole
- Frentirox
- Henning, Thiamazol
- Hexal, Thiamazol
- Imidazole-2-thio, 1-methyl-
- Imidazole-2-thiol, 1-methyl-
- Mercaptazole
- Mercaptizole
- Mercasolyl
- Mercazole
- Mercazolyl
- Mercazolylum
- Merkastan
- Merkazolil
- Metazolo
- Methamazole
- Methiamazole
- Methimazol
- Methimazole (Standard)
- Methimazole, VETRANAL(TM)
- Methimazolum
- Methylmercaptoimidazole
- Methymazol
- Metimazol
- Metizol
- Metothyrin
- Metothyrine
- Metotirin
- N-Methyl-2-mercaptoimidazole
- N-methyl imidazole-2-thiol
- Strumazol
- Strumazole
- THIAMAZOLE [MART.]
- Tapazole
- Tapazole (TN)
- Tapuzole
- Thacapzol
- Thiamazol
- Thiamazole CRS
- Thiamazolum
- Thimazol
- Thimazole
- Thycapsol
- Thycapzol
- Thymidazol
- Thymidazole
- Tiamazol
- Tiamazolo
- Usaf el-30
- methimazole
- metimazolo
- thiamazole
- tiamazole